/**
* Send HTTP response
*
* Send the specific X-Sendfile HTTP headers for internal processing by the server. For Nginx and Lighttpd 1.4
* remove the X-Sendfile header and use the specific header instead.
*
* If the X-Sendfile header is 1 or TRUE, the response path will be used instead of the path supplied in the
* header. If X-Sendfile header is 0 or FALSE the header is ignored and removed.
*
* - Apache : X-Sendfile
* - Nginx : X-Accel-Redirect
* - Lightttpd : X-LIGHTTPD-send-file (v1.4) or X-Sendfile (v1.5)
*
* @param KDispatcherResponseInterface $response
* @return boolean
*/
public function send(KDispatcherResponseInterface $response)
{
if ($response->headers->has('X-Sendfile')) {
$path = $response->headers->get('X-Sendfile');
if ($path === true || $path === 1) {
$path = $response->getStream()->getPath();
}
if (is_file($path)) {
$server = strtolower($_SERVER['SERVER_SOFTWARE']);
//Nginx uses X-Accel-Redirect header
if (strpos($server, 'nginx') !== FALSE) {
$path = preg_replace('/' . preg_quote(Koowa::getRootPath(), '/') . '/', '', $path, 1);
$response->headers->set('X-Accel-Redirect', $path);
$response->headers->remove('X-Sendfile');
}
//Lighttpd 1.4 uses X-LIGHTTPD-send-file header
if (strpos($server, 'lightttpd/1.4') !== FALSE) {
$response->headers->set('X-LIGHTTPD-send-file', $path);
$response->headers->remove('X-Sendfile');
}
return parent::send($response);
} else {
$response->headers->remove('X-Sendfile');
}
}
}
/**
* Send HTTP response
*
* If the format is json, add the padding by inspect the request query for a 'callback' parameter or by using
* the default padding if set.
*
* Don't stop the transport handler chain to allow other transports handlers to continue processing the
* response.
*
* @link http://tools.ietf.org/html/rfc2616
*
* @param KDispatcherResponseInterface $response
* @return boolean
*/
public function send(KDispatcherResponseInterface $response)
{
$request = $response->getRequest();
//Force to use the json transport if format is json
if ($request->getFormat() == 'json') {
//If not padding is set inspect the request query.
if (empty($this->_padding)) {
if ($request->query->has('callback')) {
$this->setCallback($request->query->get('callback', 'cmd'));
}
}
if (!empty($this->_padding)) {
$response->setContent(sprintf('%s(%s);', $this->_padding, $response->getContent()));
}
}
}
/**
* Send response
*
* @param KDispatcherResponseInterface $response
* @return boolean Returns true if the response has been send, otherwise FALSE
*/
public function send(KDispatcherResponseInterface $response)
{
//Cleanup and flush output to client
if (!function_exists('fastcgi_finish_request')) {
if (PHP_SAPI !== 'cli') {
for ($i = 0; $i < ob_get_level(); $i++) {
ob_end_flush();
}
flush();
}
} else {
fastcgi_finish_request();
}
//Set the exit status based on the status code.
$status = 0;
if (!$response->isSuccess()) {
$status = (int) $response->getStatusCode();
}
exit($status);
return true;
}
/**
* Send HTTP response
*
* If this is a redirect response, send the response and stop the transport handler chain.
*
* @param KDispatcherResponseInterface $response
* @return boolean
*/
public function send(KDispatcherResponseInterface $response)
{
if ($response->isRedirect()) {
$session = $response->getUser()->getSession();
//Set the messages into the session
$messages = $response->getMessages();
if (count($messages)) {
//Auto start the session if it's not active.
if (!$session->isActive()) {
$session->start();
}
$session->getContainer('message')->add($messages);
}
//Set the redirect into the response
$response->setContent(sprintf('<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="refresh" content="1;url=%1$s" />
<title>Redirecting to %1$s</title>
</head>
<body>
Redirecting to <a href="%1$s">%1$s</a>.
</body>
</html>', htmlspecialchars($response->headers->get('Location'), ENT_QUOTES, 'UTF-8')), 'text/html');
return parent::send($response);
}
}
/**
* Send HTTP response
*
* @param KDispatcherResponseInterface $response
* @return boolean
*/
public function send(KDispatcherResponseInterface $response)
{
$request = $response->getRequest();
if (!$response->isDownloadable() && $request->getFormat() == 'html') {
//Render the page
$this->getObject('com:koowa.controller.page', array('response' => $response))->layout($request->query->get('tmpl', 'cmd') == 'koowa' ? 'koowa' : 'joomla')->render();
//Pass back to Joomla
if ($request->isGet() && $request->query->get('tmpl', 'cmd') != 'koowa') {
//Mimetype
JFactory::getDocument()->setMimeEncoding($response->getContentType());
//Remove Content-Type header to prevent duplicate header conflict (see #172)
$response->headers->remove('Content-Type');
//Headers
$headers = explode("\r\n", trim((string) $response->headers));
foreach ($headers as $header) {
$parts = explode(':', $header, 2);
if (count($parts) !== 2) {
// Empty values are not allowed per RFC2616 Sec 4.2
continue;
}
// JResponse doesn't play well with cookie headers for some reason
if ($parts[0] === 'Set-Cookie') {
continue;
}
JResponse::setHeader($parts[0], $parts[1]);
}
//Cookies
foreach ($response->headers->getCookies() as $cookie) {
setcookie($cookie->name, $cookie->value, $cookie->expire, $cookie->path, $cookie->domain, $cookie->isSecure(), $cookie->isHttpOnly());
}
//Set messages for any request method
$messages = $response->getMessages();
foreach ($messages as $type => $group) {
if ($type === 'success') {
$type = 'message';
}
foreach ($group as $message) {
JFactory::getApplication()->enqueueMessage($message, $type);
}
}
//Content
echo $response->getContent();
return true;
}
}
return parent::send($response);
}
/**
* Send HTTP response
*
* @param KDispatcherResponseInterface $response
* @return boolean
*/
public function send(KDispatcherResponseInterface $response)
{
$request = $response->getRequest();
if ($response->isStreamable()) {
//Explicitly set the Accept Ranges header to bytes to inform client we accept range requests
$response->headers->set('Accept-Ranges', 'bytes');
//Set a file etag
$response->headers->set('etag', $this->getFileEtag($response));
if ($request->isStreaming()) {
if ($response->isSuccess()) {
//Default Content-Type Header
if (!$response->headers->has('Content-Type')) {
$response->headers->set('Content-Type', 'application/octet-stream');
}
//Content Range Headers
$offset = $this->getOffset($response);
$range = $this->getRange($response);
$size = $this->getFileSize($response);
$response->setStatus(KHttpResponse::PARTIAL_CONTENT);
$response->headers->set('Content-Length', $range - $offset + 1);
$response->headers->set('Content-Range', sprintf('bytes %s-%s/%s', $offset, $range, $size));
}
if ($response->isError()) {
/**
* A server sending a response with status code 416 (Requested range not satisfiable) SHOULD include a
* Content-Range field with a byte-range- resp-spec of "*". The instance-length specifies the current
* length of the selected resource.
*
* @see : http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.16
*/
if ($response->getStatusCode() == KHttpResponse::REQUESTED_RANGE_NOT_SATISFIED) {
$size = $this->getFileSize($response);
$response->headers->set('Content-Range', sprintf('bytes */%s', $size));
}
}
}
}
return parent::send($response);
}
/**
* Send HTTP response
*
* Prepares the Response before it is sent to the client. This method tweaks the headers to ensure that
* it is compliant with RFC 2616 and calculates or modifies the cache-control header to a sensible and
* conservative value
*
* @link http://tools.ietf.org/html/rfc2616
*
* @param KDispatcherResponseInterface $response
* @return boolean Returns true if the response has been send, otherwise FALSE
*/
public function send(KDispatcherResponseInterface $response)
{
$request = $response->getRequest();
//Make sure we do not have body content for 204, 205 and 305 status codes
$codes = array(KHttpResponse::NO_CONTENT, KHttpResponse::NOT_MODIFIED, KHttpResponse::RESET_CONTENT);
if (in_array($response->getStatusCode(), $codes)) {
$response->setContent(null);
}
//Remove location header if we are not redirecting and the status code is not 201
if (!$response->isRedirect() && $response->getStatusCode() !== KHttpResponse::CREATED) {
if ($response->headers->has('Location')) {
$response->headers->remove('Location');
}
}
// IIS does not like it when you have a Location header in a non-redirect request
// http://stackoverflow.com/questions/12074730/w7-pro-iis-7-5-overwrites-php-location-header-solved
if ($response->headers->has('Location') && !$response->isRedirect()) {
$server = isset($_SERVER['SERVER_SOFTWARE']) ? $_SERVER['SERVER_SOFTWARE'] : getenv('SERVER_SOFTWARE');
if ($server && strpos(strtolower($server), 'microsoft-iis') !== false) {
$response->headers->remove('Location');
}
}
//Add file related information if we are serving a file
if ($response->isDownloadable()) {
//Last-Modified header
if ($time = $response->getStream()->getTime(KFilesystemStreamInterface::TIME_MODIFIED)) {
$response->setLastModified($time);
}
$user_agent = $response->getRequest()->getAgent();
// basename does not work if the string starts with a UTF character
$filename = ltrim(basename(' ' . strtr($response->getStream()->getPath(), array('/' => '/ '))));
// Android cuts file names after #
if (stripos($user_agent, 'Android')) {
$filename = str_replace('#', '_', $filename);
}
$disposition = array('filename' => '"' . $filename . '"');
// IE7 and 8 accepts percent encoded file names as the filename value
// Other browsers (except Safari) use filename* header starting with UTF-8''
$encoded_name = rawurlencode($filename);
if ($encoded_name !== $filename) {
if (preg_match('/(?i)MSIE [4-8]/i', $user_agent)) {
$disposition['filename'] = '"' . $encoded_name . '"';
} elseif (!stripos($user_agent, 'AppleWebkit')) {
$disposition['filename*'] = 'UTF-8\'\'' . $encoded_name;
}
}
//Disposition header
$response->headers->set('Content-Disposition', array_merge(array('inline'), $disposition));
//Force a download by the browser by setting the disposition to 'attachment'.
if ($response->isAttachable()) {
$response->setContentType('application/octet-stream');
$response->headers->set('Content-Disposition', array_merge(array('attachment'), $disposition));
}
//Explicitly disable the IE pause button
if (!$response->headers->has('Accept-Ranges')) {
$response->headers->set('Accept-Ranges', 'none');
}
}
//Add Last-Modified header if not present
if (!$response->headers->has('Last-Modified')) {
$response->setLastModified(new DateTime('now'));
}
//Add Content-Length if not present
if (!$response->headers->has('Content-Length')) {
$response->headers->set('Content-Length', $response->getStream()->getSize());
}
//Remove Content-Length for transfer encoded responses that do not contain a content range
if ($response->headers->has('Transfer-Encoding')) {
$response->headers->remove('Content-Length');
}
//Modifies the response so that it conforms to the rules defined for a 304 status code.
if ($response->getStatusCode() == KHttpResponse::NOT_MODIFIED) {
$response->setContent(null);
$headers = array('Allow', 'Content-Encoding', 'Content-Language', 'Content-Length', 'Content-MD5', 'Content-Type', 'Last-Modified');
//Remove headers that MUST NOT be included with 304 Not Modified responses
foreach ($headers as $header) {
$response->headers->remove($header);
}
}
//Calculates or modifies the cache-control header to a sensible, conservative value.
$cache_control = (array) $response->headers->get('Cache-Control', null, false);
if (empty($cache_control)) {
if (!$response->isCacheable()) {
$response->headers->set('Cache-Control', 'no-cache');
} else {
$response->headers->set('Cache-Control', array('private', 'must-revalidate'));
}
}
// Prevent caching: Cache-control needs to be empty for IE on SSL.
// See: http://support.microsoft.com/default.aspx?scid=KB;EN-US;q316431
if ($request->isSecure() && preg_match('#(?:MSIE |Internet Explorer/)(?:[0-9.]+)#', $request->getAgent())) {
$response->headers->set('Cache-Control', '');
}
//Send headers and content
$this->sendHeaders($response)->sendContent($response);
return parent::send($response);
}
